Video and audio strips of imported file out of sync?
You need to find out what framerate your footage is at. A video is saved at a constant framerate no matter how fast the game runs. Find out what that is, and in the Properties Window on the Render Tab (the settings on the right which is usually hidden on the Video Editor interface), set the framerate.



Then, in the Video Editor, drag your video in and find the end frame. Set the end frame to the ending frame of your video. (See this topic for help: How can I make my animation play for longer than 250 Frames? )

Also, set the player to A/V Sync (the button is right under the Timeline) so Blender will sync the audio and the video.